General Information:
Chemical Formula:Zn2SiO4
Composition:(Molecular Weight = 222.86 gm)Zinc 58.68 %
ZnSilicon 12.60 %
SiOxygen 28.72 %
O Empirical Formula: Zn2(SiO4)
Environment:Main ore mineral at Franklin, a metamorphosed zinc orebody.
Locality:Franklin, Sussex Co., New Jersey, USA.
Name Origin:After Willem I, King of the Netherlands (1772-1843).
Physical Properties: Cleavage:[0001] Poor, [1120] Poor
Color:white, yellow, green, reddish brown, or black.
Density:3.9 - 4.2, Average = 4.05
Diaphaniety:Transparent to translucent to opaque
Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Granular - Common texture observed in granite and other igneous rock., Massive - Uniformly indistinguisha ble crystals forming large masses.
Hardness:5.5 - Knife Blade
Luminescence:Fluorescent, Short UV=green.
Luster:Vitreous - Resinous
Streak:white
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